KATE`S BIRTHDAY BEAU
TUESDAY MAY 11, 1999 12:00 AM EDT
Waif-like supermodel Kate Moss -- back in the swing after a month of rehab, reportedly for treatment of overindulgence in drink, drugs and sex -- has a new guy. The New York Post says he`s "Titanic" villain Billy Zane, who helped Kate celebrate her 25th birthday last weekend in Paris, where fashion priestess Donatella Versace hosted a party for Moss at the Les Bains nightclub. Zane, currently in London to play Marc Antony in the upcoming NBC mini-series "Antony & Cleopatra," met Moss last summer in Cannes. Their hangout in London is the Ivy, the old theatrical restaurant (newly spruced up) that was Noel Coward`s favorite. Zane`s rep told the Post of the actor`s relationship with Kate: "They`re friends, and they have been hanging out."